CSV export string concatenation

Code reviewAlgorithms & data structuresMid–Senior~20 min

Review this Java CSV exporter.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix, specific and kind.

0:00 of about 20 min

Mark a line and say what kind of problem it is.0 findings

1public String toCsv(List<Record> records) {

2 String out = "id,name,amount\n";

3 for (Record r : records) {

4 out += r.getId() + ","

5 + r.getName() + ","

6 + r.getAmount() + "\n";

7 }

8 return out;

11public void writeExport(List<Record> records, Path file) throws IOException {

12 Files.writeString(file, toCsv(records));

13}

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